anyone using a mechanical water temp gauge?
Im not sure where I need to put the probe.
let me correct that and say im not sure where I can put it. It seems like I have to MAKE a place to put it.
It would be nice to just screw the thing in and be done with it.

 

it goes on the back side of the waterpump housing where the factory choke tem probe went. you can get a metric to sae adapter if you dont want to re-tap the hole

 

my haltech currently has a water temp sensor there.

 

either t-stat cover or buy the in-line adapter from ISC.

 

 

I like that setup up there came our real clean

 

i plan to do it the same way as ray green. iam going to weld a nut to it for a bung one question are the sending units pipe thread.


iam going to be doing this once i have the spare cash for new hoses and coolant.

 

Yes you do need to weld a nut onto the housing to accept the pipe threaded sender seat. We used a regular heavy nut and cut it in half with a saws all, drilled a hole in the housing and then I took it to a welder who tacked and welded it into place. You can see it in this photo.










Details at:

https://www.rx7club.com/1st-generation-specific-1979-1985-18/second-water-temp-sender-tip-installation-question-631760/

 

I always weld the extra an bung that comes with the gauge right to the surface. Then all you have to do is drill a hole.

Your idea works well too.

 

clean install Ray

 

yeah both ideas work really well...i use the back of the water pump housing inlet for my set up's

 

im just saying that you usually dont need the nut, just weld the bung that usually comes with the gauge.
Unless you need more clearance that is.